Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2001CHEVY EXPRESS G3500, VAN PASSENGER EXTENDED, 6.5 FREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 9 (BODY CONTROL MODULES)SELF-DIAGNOSTIC SYSTEMRADIO/AUDIO SYSTEM DIAGNOSTIC SYSTEM CHECK
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 F
Radio/Audio System Diagnostic System Check
2001 Chevrolet Chevy Express G3500, Van Passenger Extended, 6.5 FSECTION Radio/Audio System Diagnostic System Check
WARNING: This page is about a different car, the 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2001 Chevrolet Monte Carlo, and 2001 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Use this check as starting point for any radio/audio system complaint.
- Turn ignition switch to OFF position. Connect scan tool to Data Link Connector (DLC). Turn ignition switch to RUN position. If scan tool powers up, go to next step. If scan tool does not power up, go to TEST D: SCAN TOOL DOES NOT POWER UP under SYSTEM TESTS.
- Turn ignition switch to RUN position. Connect scan tool to Data Link Connector (DLC). Try to establish scan tool communication with radio and remote CD changer (if equipped). If communication with radio and remote CD changer (if equipped) is established, go to next step. If communication with radio and remote CD changer (if equipped) is not established, see TEST C: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS.
- Using scan tool, select DISPLAY DTCs function for radio and remote CD changer (if equipped). If any DTCs are listed, go to next step. If no DTCs are listed, go to repair as necessary.
- Using scan tool, retrieve DTCs. If DTCs U1000-U1305 are not present, go to DIAGNOSTIC TROUBLE CODE DEFINITIONS . Repair as necessary. If DTCs U1000-U1305 are present, see TEST C: SCAN TOOL DOES NOT COMMUNICATE WITH CLASS 2 DEVICE under SYSTEM TESTS.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.